Merge pull request #484 from pesickaa/nextjs-add-self-serve-portal-link

Create docs for self-serve portal links for nextjs-sdk

Author: clairekinde11

src/content/docs/developer-tools/sdks/backend/nextjs-sdk.mdx

@@ -1606,6 +1606,38 @@ import {LoginLink, RegisterLink} from "@kinde-oss/kinde-auth-nextjs/components";
 
 If the `orgCode` is not specified and the user belongs to multiple organizations, they will be prompted to choose which organization to sign in to during the login or register flow.
 
+## Self Serve Portal
+
+To allow your users to be sent to the self-serve portal, you can use the `PortalLink` component. 
+Check here for information on enabling [self-serve portal for Organizations](https://docs.kinde.com/build/set-up-options/self-serve-portal-for-orgs/).
+Check here for information on enabling [self-serve portal for users](https://docs.kinde.com/build/set-up-options/self-serve-portal-for-users/).
+To use our self-serve portal API please see [Get self-serve portal link](https://docs.kinde.com/kinde-apis/frontend/).
+
+```jsx
+import {PortalLink} from "@kinde-oss/kinde-auth-nextjs/components";
+
+<PortalLink>Portal Link Name</PortalLink>
+```
+### subNav
+
+The  `subNav=""` property allows you to set the area of the portal you want the user to land on. By default, it will send users to their profile. 
+
+```jsx
+import {PortalLink} from "@kinde-oss/kinde-auth-nextjs/components";
+import { PortalPage } from "@kinde/js-utils";
+
+<PortalLink subNav={PortalPage.organizationPaymentDetails}></PortalLink>
+```
+
+### returnUrl
+The `returnUrl` property is the URL to redirect the user to after they have completed their actions in the portal. The url must be an absolute url to work correctly. 
+
+```jsx
+import {PortalLink} from "@kinde-oss/kinde-auth-nextjs/components";
+
+<PortalLink returnUrl="http://yourdomain.example"></PortalLink>
+```
+
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